EthernetWebServer

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New in v1.0.10

1. Fix bug not closing client and releasing socket.
2. Merge new features from latest ESP8266WebServer
3. Add and enhance examples.

New in v1.0.9

1. Add EthernetWrapper.h for easier W5x00 support as well as more Ethernet libs in the future.
2. Add default SS/CS pin for ESP8266 and ESP32
3. Increase default clock speed for W5x00 in Ethernet and EthernetLarge libraries to 25MHz from 14MHz. Tested OK on W5100 as well as W5500.

New in v1.0.8

1. Fix W5x00 support for ESP8266 and many more boards.

New in v1.0.7

1. Add ENC28J60 support to ESP32 and ESP8266 boards.

New in v1.0.6

1. Add W5x00 nsupport to ESP32 and ESP8266 boards.

New in v1.0.5

1. Add support to nRF52 boards, such as AdaFruit Feather nRF52832, nRF52840 Express, BlueFruit Sense, Itsy-Bitsy nRF52840 Express, Metro nRF52840 Express, NINA_B30_ublox, etc.
2. Support any future custom Ethernet library that meets the no-compiling-error requirements. Currently Ethernet2, EThernet3, EthernetLarge libraries are supported. Ethernet_Shield_W5200, EtherCard, EtherSia libraries are not supported now.

New in v1.0.4

1. Add support to SAM51 (Itsy-Bitsy M4, Metro M4, Grand Central M4, Feather M4 Express, etc.).

From v1.0.3+, the library supports more Arduino boards ( SAM DUE, SAMD21: ZERO, MKR, NANO_33_IOT, M0, M0 Pro, AdaFruit CIRCUITPLAYGROUND_EXPRESS, etc.)

From v1.0.2+, the library supports many more Arduino boards (Atmel AVR-s, Atmel SAM3X8E ARM Cortex-M3, STM32F series, ESP8266, Intel ARC32(Genuino101), Nordic nRF51(RFduino), Teensy boards, Realtek Ameba(RTL8195A,RTL8710)) using Wiznet W5x00 or ENC28J60 EThernet shields by using UIPEthernet library besides standard Ethernet library.

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This is simple yet complete WebServer library for AVR, Teensy, SAM DUE, Arduino SAMD21, Adafruit SAMD21/SAMD51, ESP32/ESP8266, etc. boards running Ethernet shields. The functions are similar and compatible to ESP8266/ESP32 WebServer libraries to make life much easier to port sketches from ESP8266/ESP32.

The library supports

1. TCP Server and Client
2. HTTP Server and Client
3. HTTP GET and POST requests, provides argument parsing, handles one client at a time.

Library is based on and modified from:

1. Ivan Grokhotkov's ESP8266WebServer

The EthernetWebServer class found in EthernetWebServer.h header, is a simple web server that knows how to handle HTTP requests such as GET and POST and can only support one simultaneous client.

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Prerequisite

1. Arduino IDE 1.8.12+ for Arduino
2. Arduino AVR core 1.8.2+ for Arduino (Use Arduino Board Manager) for AVR boards
3. Teensy core v1.53+ for Teensy (4.1, 4.0, 3.6, 3.5, 3,2, 3.1, 3.0) boards.
4. Arduino SAM DUE core v1.6.12+ for SAM DUE ARM Cortex-M3 boards.
5. Arduino SAMD core 1.8.6+ for SAMD ARM Cortex-M0+ boards (Nano 33 IoT, etc.).
6. Adafruit SAMD core 1.5.14+ for SAMD ARM Cortex-M0+ and M4 boards (Itsy-Bitsy M4, etc.)
7. Adafruit nRF52 v0.20.5+ for nRF52 boards such as AdaFruit Feather nRF52840 Express, NINA_B302_ublox, NINA_B112_ublox, etc.
8. ESP32 core 1.0.4+ for ESP32 boards
9. ESP8266 core 2.7.2+ for ESP8266 boards. To use ESP8266 core 2.7.1+ for LittleFS.
10. Functional-VLPP library v1.0.1+ to use server's lambda function. To install. check
11. Depending on which Ethernet card you're using:

• Ethernet library for W5100, W5200 and W5500.
• EthernetLarge library for W5100, W5200 and W5500.
• Ethernet2 library for W5500.
• Ethernet3 library for W5500/WIZ550io/WIZ850io/USR-ES1 with Wiznet W5500 chip.
• UIPEthernet for ENC28J60

Installation

Use Arduino Library Manager

The best and easiest way is to use Arduino Library Manager. Search for EthernetWebServer, then select / install the latest version. You can also use this link for more detailed instructions.

Manual Install

1. Navigate to EthernetWebServer page.
2. Download the latest release EthernetWebServer-master.zip.
3. Extract the zip file to EthernetWebServer-master directory
4. Copy the whole EthernetWebServer-master folder to Arduino libraries' directory such as ~/Arduino/libraries/.

VS Code & PlatformIO:

1. Install VS Code
2. Install PlatformIO
3. Install EthernetWebServer library by using Library Manager. Search for WiFiWebServer in Platform.io Author's Libraries
4. Use included platformio.ini file from examples to ensure that all dependent libraries will installed automatically.

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Packages' Patches

1. To be able to compile, run and automatically detect and display BOARD_NAME on nRF52840 boards, you have to copy the whole nRF52 0.20.5 directory into Adafruit nRF52 directory (~/.arduino15/packages/adafruit/hardware/nrf52/0.20.5).

Supposing the Adafruit nRF52 version is 0.20.5. These files must be copied into the directory:

• ~/.arduino15/packages/adafruit/hardware/nrf52/0.20.5/platform.txt
• ~/.arduino15/packages/adafruit/hardware/nrf52/0.20.5/boards.txt
• ~/.arduino15/packages/adafruit/hardware/nrf52/0.20.5/variants/NINA_B302_ublox/variant.h
• ~/.arduino15/packages/adafruit/hardware/nrf52/0.20.5/variants/NINA_B302_ublox/variant.cpp
• ~/.arduino15/packages/adafruit/hardware/nrf52/0.20.5/variants/NINA_B112_ublox/variant.h
• ~/.arduino15/packages/adafruit/hardware/nrf52/0.20.5/variants/NINA_B112_ublox/variant.cpp

Whenever a new version is installed, remember to copy these files into the new version directory. For example, new version is x.yy.z These files must be copied into the directory:

• ~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/platform.txt
• ~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/boards.txt
• ~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/variants/NINA_B302_ublox/variant.h
• ~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/variants/NINA_B302_ublox/variant.cpp
• ~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/variants/NINA_B112_ublox/variant.h
• ~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/variants/NINA_B112_ublox/variant.cpp

2. To be able to compile and run on Teensy boards, you have to copy the file Teensy boards.txt into Teensy hardware directory (./arduino-1.8.12/hardware/teensy/avr/boards.txt).

Supposing the Arduino version is 1.8.12. This file must be copied into the directory:

• ./arduino-1.8.12/hardware/teensy/avr/boards.txt

Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz This file must be copied into the directory:

• ./arduino-x.yy.zz/hardware/teensy/avr/boards.txt

3. To be able to compile and run on SAM DUE boards, you have to copy the whole SAM DUE directory into Arduino sam directory (~/.arduino15/packages/arduino/hardware/sam/1.6.12).

Supposing the Arduino SAM core version is 1.6.12. This file must be copied into the directory:

• ~/.arduino15/packages/arduino/hardware/sam/1.6.12/platform.txt

Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz This file must be copied into the directory:

• ~/.arduino15/packages/arduino/hardware/sam/x.yy.zz/platform.txt

4. To be able to automatically detect and display BOARD_NAME on Arduino SAMD (Nano-33-IoT, etc) boards, you have to copy the file Arduino SAMD platform.txt into Arduino samd directory (~/.arduino15/packages/arduino/hardware/samd/1.8.6).

Supposing the Arduino SAMD core version is 1.8.6. This file must be copied into the directory:

• ~/.arduino15/packages/arduino/hardware/samd/1.8.6/platform.txt

Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz This file must be copied into the directory:

• ~/.arduino15/packages/arduino/hardware/samd/x.yy.zz/platform.txt

5. To be able to automatically detect and display BOARD_NAME on Adafruit SAMD (Itsy-Bitsy M4, etc) boards, you have to copy the file Adafruit SAMD platform.txt into Adafruit samd directory (~/.arduino15/packages/adafruit/hardware/samd/1.5.14).

Supposing the Adafruit SAMD core version is 1.5.14. This file must be copied into the directory:

• ~/.arduino15/packages/adafruit/hardware/samd/1.5.14/platform.txt

Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz This file must be copied into the directory:

• ~/.arduino15/packages/adafruit/hardware/samd/x.yy.zz/platform.txt

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Libraries' Patches

1. If your application requires 2K+ HTML page, the current Ethernet library must be modified if you are using W5200/W5500 Ethernet shields. W5100 is not supported for 2K+ buffer. If you use boards requiring different CS/SS pin for W5x00 Ethernet shield, for example ESP32, ESP8266, nRF52, etc., you also have to modify the following libraries to be able to specify the CS/SS pin correctly.

2. To fix Ethernet library, just copy these following files into the Ethernet library directory to overwrite the old files:

• Ethernet.h
• Ethernet.cpp
• EthernetServer.cpp
• w5100.h
• w5100.cpp

3. To fix EthernetLarge library, just copy these following files into the EthernetLarge library directory to overwrite the old files:

• Ethernet.h
• Ethernet.cpp
• EthernetServer.cpp
• w5100.h
• w5100.cpp

4. To fix UIPEthernet, just copy these following files into the UIPEthernet directory to overwrite the old files:

• Enc28J60Network.h
• Enc28J60Network.cpp

5. To fix ESP32 compile error, just copy the following file into the ESP32 cores/esp32 directory (e.g. ./arduino-1.8.12/hardware/espressif/cores/esp32) to overwrite the old file:

• Server.h

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Configuration Notes

1. How to select which built-in Ethernet or shield to use

The easiest way is to use

#define USE_ETHERNET_WRAPPER    true

then select one and only one Ethernet library to use as follows:

• Standard Ethernet library is used by default, in the sketch, just be sure to comment out or leave these #defines to be false :

//#define USE_UIP_ETHERNET        true
//#define USE_CUSTOM_ETHERNET     true

// Only one if the following to be true
#define USE_ETHERNET2         false //true
#define USE_ETHERNET3         false //true
#define USE_ETHERNET_LARGE    false //true
#define USE_ETHERNET_ESP8266  false //true

• To use built-in UIPEthernet built-in or shield:

#define USE_UIP_ETHERNET        true
//#define USE_CUSTOM_ETHERNET     true

// Only one if the following to be true
#define USE_ETHERNET2         false //true
#define USE_ETHERNET3         false //true
#define USE_ETHERNET_LARGE    false //true
#define USE_ETHERNET_ESP8266  false //true

• To use any of the custom Ethernet library, such as Ethernet2, Ethernet3, EthernetLarge:

//#define USE_UIP_ETHERNET        true
#define USE_CUSTOM_ETHERNET     true

// Only one if the following to be true
#define USE_ETHERNET2         false //true
#define USE_ETHERNET3         false //true
#define USE_ETHERNET_LARGE    true
#define USE_ETHERNET_ESP8266  false //true

• To use another Ethernet library For example, Ethernet_XYZ library uses Ethernet_XYZ.h

//#define USE_UIP_ETHERNET        true
#define USE_CUSTOM_ETHERNET     true

// Only one if the following to be true
#define USE_ETHERNET2         false //true
#define USE_ETHERNET3         false //true
#define USE_ETHERNET_LARGE    false //true
#define USE_ETHERNET_ESP8266  false //true

//Must be placed before #include <EthernetWebServer.h>
#include <Ethernet_XYZ.h>
...

#include <EthernetWebServer.h>

Important:

• The Ethernet_Shield_W5200, EtherCard, EtherSia libraries are not supported. Don't use unless you know how to modify those libraries.
• Requests to support for any future custom Ethernet library will be ignored. Use at your own risk.

2. How to select another CS/SS pin to use

The default CS/SS pin is GPIO4(D2) for ESP8266, GPIO22 for ESP32, 10 for all other boards.

If the default pin is not corect, the easiest way is to change is to use

#define USE_ETHERNET_WRAPPER    true

then select the CS/SS pin (e.g. 22) to use as follows:

// To override the default CS/SS pin. Don't use unless you know exactly which pin to use
#define USE_THIS_SS_PIN   22

3. How to use W5x00 with ESP8266

To avoid using the default but not-working Ethernet library of ESP8266, rename the Ethernet.h/cpp to Ethernet_ESP8266.h/cpp to avoid library conflict if you're using the Arduino Ethernet library. The Ethernet2, Ethernet3, EthernetLarge library can be used without conflict.

These pins are tested OK with ESP8266 and W5x00

  // For ESP8266
  // Pin                D0(GPIO16)    D1(GPIO5)    D2(GPIO4)    D3(GPIO0)    D4(GPIO2)    D8
  // Ethernet           0                 X            X            X            X        0
  // Ethernet2          X                 X            X            X            X        0
  // Ethernet3          X                 X            X            X            X        0
  // EthernetLarge      X                 X            X            X            X        0
  // Ethernet_ESP8266   0                 0            0            0            0        0
  // D2 is safe to used for Ethernet, Ethernet2, Ethernet3, EthernetLarge libs
  // Must use library patch for Ethernet, EthernetLarge libraries
  //Ethernet.setCsPin (USE_THIS_SS_PIN);
  Ethernet.init (USE_THIS_SS_PIN);

4. How to increase W5x00 TX/RX buffer

• For Ethernet3 library only, use as follows

  // Use  MAX_SOCK_NUM = 4 for 4K, 2 for 8K, 1 for 16K RX/TX buffer
  #ifndef ETHERNET3_MAX_SOCK_NUM
    #define ETHERNET3_MAX_SOCK_NUM      4
  #endif
  
  Ethernet.setCsPin (USE_THIS_SS_PIN);
  Ethernet.init (ETHERNET3_MAX_SOCK_NUM);

---

Usage

Init the CS/SS pin if use EthernetWrapper

EthernetInit();

Class Constructor

  EthernetWebServer server(80);

Creates the EthernetWebServer class object.

Parameters:

host port number: int port (default is the standard HTTP port 80)

Basic Operations

Starting the server

  void begin();

Handling incoming client requests

  void handleClient();

Disabling the server

  void close();
  void stop();

Both methods function the same

Client request handlers

  void on();
  void addHandler();
  void onNotFound();
  void onFileUpload();	

Example:*

  server.on("/", handlerFunction);
  server.onNotFound(handlerFunction);   // called when handler is not assigned
  server.onFileUpload(handlerFunction); // handle file uploads

Sending responses to the client

  void send();
  void send_P();

Parameters:

code - HTTP response code, can be 200 or 404, etc.

content_type - HTTP content type, like "text/plain" or "image/png", etc.

content - actual content body

Advanced Options

Getting information about request arguments

  const String & arg();
  const String & argName();
  int args();
  bool hasArg();

Function usage:

arg - get request argument value, use arg("plain") to get POST body

argName - get request argument name

args - get arguments count

hasArg - check if argument exist

Getting information about request headers

  const String & header();
  const String & headerName();
  const String & hostHeader();
  int headers();
  bool hasHeader();

Function usage:

header - get request header value

headerName - get request header name

hostHeader - get request host header if available, else empty string

headers - get header count

hasHeader - check if header exist

Authentication

  bool authenticate();
  void requestAuthentication();

Function usage:

authenticate - server authentication, returns true if client is authenticated else false

requestAuthentication - sends authentication failure response to the client

Example Usage:

  if(!server.authenticate(username, password)){
    server.requestAuthentication();
  }

Other Function Calls

  const String & uri(); // get the current uri
  HTTPMethod  method(); // get the current method 
  WiFiClient client(); // get the current client
  HTTPUpload & upload(); // get the current upload
  void setContentLength(); // set content length
  void sendHeader(); // send HTTP header
  void sendContent(); // send content
  void sendContent_P(); 
  void collectHeaders(); // set the request headers to collect
  void serveStatic();
  size_t streamFile();

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Also see examples:

1. HelloServer
2. HelloServer2
3. AdvancedWebServer
4. HttpBasicAuth
5. PostServer
6. SimpleAuthentication
7. WebClient
8. WebClientRepeating
9. WebServer

Example AdvancedWebServer

Please take a look at other examples as well.

/*
   The Arduino board communicates with the shield using the SPI bus. This is on digital pins 11, 12, and 13 on the Uno
   and pins 50, 51, and 52 on the Mega. On both boards, pin 10 is used as SS. On the Mega, the hardware SS pin, 53,
   is not used to select the Ethernet controller chip, but it must be kept as an output or the SPI interface won't work.
*/

#define DEBUG_ETHERNET_WEBSERVER_PORT       Serial

// Debug Level from 0 to 4
#define _ETHERNET_WEBSERVER_LOGLEVEL_       4

#if    ( defined(ARDUINO_SAMD_ZERO) || defined(ARDUINO_SAMD_MKR1000) || defined(ARDUINO_SAMD_MKRWIFI1010) \
      || defined(ARDUINO_SAMD_NANO_33_IOT) || defined(ARDUINO_SAMD_MKRFox1200) || defined(ARDUINO_SAMD_MKRWAN1300) || defined(ARDUINO_SAMD_MKRWAN1310) \
      || defined(ARDUINO_SAMD_MKRGSM1400) || defined(ARDUINO_SAMD_MKRNB1500) || defined(ARDUINO_SAMD_MKRVIDOR4000) || defined(__SAMD21G18A__) \
      || defined(ARDUINO_SAMD_CIRCUITPLAYGROUND_EXPRESS) || defined(__SAMD21E18A__) || defined(__SAMD51__) || defined(__SAMD51J20A__) || defined(__SAMD51J19A__) \
      || defined(__SAMD51G19A__) || defined(__SAMD21G18A__) )
#if defined(ETHERNET_USE_SAMD)
#undef ETHERNET_USE_SAMD
#endif
#define ETHERNET_USE_SAMD      true
#endif

#if ( defined(NRF52840_FEATHER) || defined(NRF52832_FEATHER) || defined(NRF52_SERIES) || defined(ARDUINO_NRF52_ADAFRUIT) || \
        defined(NRF52840_FEATHER_SENSE) || defined(NRF52840_ITSYBITSY) || defined(NRF52840_CIRCUITPLAY) || defined(NRF52840_CLUE) || \
        defined(NRF52840_METRO) || defined(NRF52840_PCA10056) || defined(PARTICLE_XENON) || defined(NINA_B302_ublox) || defined(NINA_B112_ublox) )
#if defined(ETHERNET_USE_NRF528XX)
#undef ETHERNET_USE_NRF528XX
#endif
#define ETHERNET_USE_NRF528XX      true
#endif

#if ( defined(ARDUINO_SAM_DUE) || defined(__SAM3X8E__) )
#if defined(ETHERNET_USE_SAM_DUE)
#undef ETHERNET_USE_SAM_DUE
#endif
#define ETHERNET_USE_SAM_DUE      true
#endif

#if defined(ETHERNET_USE_SAMD)
// For SAMD

#if defined(ARDUINO_SAMD_ZERO)
#define BOARD_TYPE      "SAMD Zero"
#elif defined(ARDUINO_SAMD_MKR1000)
#define BOARD_TYPE      "SAMD MKR1000"
#elif defined(ARDUINO_SAMD_MKRWIFI1010)
#define BOARD_TYPE      "SAMD MKRWIFI1010"
#elif defined(ARDUINO_SAMD_NANO_33_IOT)
#define BOARD_TYPE      "SAMD NANO_33_IOT"
#elif defined(ARDUINO_SAMD_MKRFox1200)
#define BOARD_TYPE      "SAMD MKRFox1200"
#elif ( defined(ARDUINO_SAMD_MKRWAN1300) || defined(ARDUINO_SAMD_MKRWAN1310) )
#define BOARD_TYPE      "SAMD MKRWAN13X0"
#elif defined(ARDUINO_SAMD_MKRGSM1400)
#define BOARD_TYPE      "SAMD MKRGSM1400"
#elif defined(ARDUINO_SAMD_MKRNB1500)
#define BOARD_TYPE      "SAMD MKRNB1500"
#elif defined(ARDUINO_SAMD_MKRVIDOR4000)
#define BOARD_TYPE      "SAMD MKRVIDOR4000"
#elif defined(ARDUINO_SAMD_CIRCUITPLAYGROUND_EXPRESS)
#define BOARD_TYPE      "SAMD ARDUINO_SAMD_CIRCUITPLAYGROUND_EXPRESS"
#elif defined(ADAFRUIT_ITSYBITSY_M4_EXPRESS)
#define BOARD_TYPE      "SAMD ADAFRUIT_ITSYBITSY_M4_EXPRESS"
#elif defined(__SAMD21E18A__)
#define BOARD_TYPE      "SAMD21E18A"
#elif defined(__SAMD21G18A__)
#define BOARD_TYPE      "SAMD21G18A"
#elif defined(__SAMD51G19A__)
#define BOARD_TYPE      "SAMD51G19A"
#elif defined(__SAMD51J19A__)
#define BOARD_TYPE      "SAMD51J19A"
#elif defined(__SAMD51J20A__)
#define BOARD_TYPE      "SAMD51J20A"
#elif defined(__SAMD51__)
#define BOARD_TYPE      "SAMD51"
#else
#define BOARD_TYPE      "SAMD Unknown"
#endif

#elif (ETHERNET_USE_SAM_DUE)
#define BOARD_TYPE      "SAM DUE"

#elif (ETHERNET_USE_NRF528XX)

#if defined(NRF52840_FEATHER)
#define BOARD_TYPE      "NRF52840_FEATHER"
#elif defined(NRF52832_FEATHER)
#define BOARD_TYPE      "NRF52832_FEATHER"
#elif defined(NRF52840_FEATHER_SENSE)
#define BOARD_TYPE      "NRF52840_FEATHER_SENSE"
#elif defined(NRF52840_ITSYBITSY)
#define BOARD_TYPE      "NRF52840_ITSYBITSY"
#elif defined(NRF52840_CIRCUITPLAY)
#define BOARD_TYPE      "NRF52840_CIRCUITPLAY"
#elif defined(NRF52840_CLUE)
#define BOARD_TYPE      "NRF52840_CLUE"
#elif defined(NRF52840_METRO)
#define BOARD_TYPE      "NRF52840_METRO"
#elif defined(NRF52840_PCA10056)
#define BOARD_TYPE      "NRF52840_PCA10056"
#elif defined(NINA_B302_ublox)
#define BOARD_TYPE      "NINA_B302_ublox"
#elif defined(NINA_B112_ublox)
#define BOARD_TYPE      "NINA_B112_ublox"
#elif defined(PARTICLE_XENON)
#define BOARD_TYPE      "PARTICLE_XENON"
#elif defined(ARDUINO_NRF52_ADAFRUIT)
#define BOARD_TYPE      "ARDUINO_NRF52_ADAFRUIT"
#else
#define BOARD_TYPE      "nRF52 Unknown"
#endif

#elif ( defined(CORE_TEENSY) )
#if defined(__IMXRT1062__)
// For Teensy 4.1/4.0
#define BOARD_TYPE      "TEENSY 4.1/4.0"
#elif defined(__MK66FX1M0__)
#define BOARD_TYPE "Teensy 3.6"
#elif defined(__MK64FX512__)
#define BOARD_TYPE "Teensy 3.5"
#elif defined(__MKL26Z64__)
#define BOARD_TYPE "Teensy LC"
#elif defined(__MK20DX256__)
#define BOARD_TYPE "Teensy 3.2" // and Teensy 3.1 (obsolete)
#elif defined(__MK20DX128__)
#define BOARD_TYPE "Teensy 3.0"
#elif defined(__AVR_AT90USB1286__)
#error Teensy 2.0++ not supported yet
#elif defined(__AVR_ATmega32U4__)
#error Teensy 2.0 not supported yet
#else
// For Other Boards
#define BOARD_TYPE      "Unknown Teensy Board"
#endif

#elif ( defined(ESP8266) )
// For ESP8266
#warning Use ESP8266 architecture
#include <ESP8266mDNS.h>
#define ETHERNET_USE_ESP8266
#define BOARD_TYPE      "ESP8266"

#elif ( defined(ESP32) )
// For ESP32
#warning Use ESP32 architecture
#define ETHERNET_USE_ESP32
#define BOARD_TYPE      "ESP32"

#define W5500_RST_PORT   21

#else
// For Mega
#define BOARD_TYPE      "AVR Mega"
#endif

#ifndef BOARD_NAME
  #define BOARD_NAME    BOARD_TYPE
#endif

#include <SPI.h>

#define USE_ETHERNET_WRAPPER    true
//#define USE_ETHERNET_WRAPPER    false

// Use true  for ENC28J60 and UIPEthernet library (https://github.com/UIPEthernet/UIPEthernet)
// Use false for W5x00 and Ethernetx library      (https://www.arduino.cc/en/Reference/Ethernet)

//#define USE_UIP_ETHERNET   true
#define USE_UIP_ETHERNET   false

//#define USE_CUSTOM_ETHERNET     true

// Note: To rename ESP628266 Ethernet lib files to Ethernet_ESP8266.h and Ethernet_ESP8266.cpp
// In order to USE_ETHERNET_ESP8266
#if ( !defined(USE_UIP_ETHERNET) || !USE_UIP_ETHERNET )

// To override the default CS/SS pin. Don't use unless you know exactly which pin to use
//#define USE_THIS_SS_PIN   22  //21  //5 //4 //2 //15

// Only one if the following to be true
#define USE_ETHERNET2         false //true
#define USE_ETHERNET3         false //true
#define USE_ETHERNET_LARGE    true
#define USE_ETHERNET_ESP8266  false //true

#if !USE_ETHERNET_WRAPPER

#if ( USE_ETHERNET2 || USE_ETHERNET3 || USE_ETHERNET_LARGE || USE_ETHERNET_ESP8266 )
#ifdef USE_CUSTOM_ETHERNET
#undef USE_CUSTOM_ETHERNET
#define USE_CUSTOM_ETHERNET   true
#endif
#endif

#if USE_ETHERNET3
#include "Ethernet3.h"
#warning Use Ethernet3 lib
#elif USE_ETHERNET2
#include "Ethernet2.h"
#warning Use Ethernet2 lib
#elif USE_ETHERNET_LARGE
#include "EthernetLarge.h"
#warning Use EthernetLarge lib
#elif USE_ETHERNET_ESP8266
#include "Ethernet_ESP8266.h"
#warning Use Ethernet_ESP8266 lib
#elif USE_CUSTOM_ETHERNET
#include "Ethernet_XYZ.h"
#warning Use Custom Ethernet library from EthernetWrapper. You must include a library here or error.
#else
#define USE_ETHERNET          true
#include "Ethernet.h"
#warning Use Ethernet lib
#endif

// Ethernet_Shield_W5200, EtherCard, EtherSia not supported
// Select just 1 of the following #include if uncomment #define USE_CUSTOM_ETHERNET
// Otherwise, standard Ethernet library will be used for W5x00

#endif    //#if !USE_UIP_ETHERNET
#endif    //USE_ETHERNET_WRAPPER

#include <EthernetWebServer.h>

// Enter a MAC address and IP address for your controller below.
#define NUMBER_OF_MAC      20

byte mac[][NUMBER_OF_MAC] =
{
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x01 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x02 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x03 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x04 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x05 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x06 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x07 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x08 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x09 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0A },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0B },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0C },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0D },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0E },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0F },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x10 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x11 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x12 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x13 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x14 },
};

// Select the IP address according to your local network
IPAddress ip(192, 168, 2, 222);

EthernetWebServer server(80);

int reqCount = 0;                // number of requests received

void handleRoot()
{
#define BUFFER_SIZE     400
  
  char temp[BUFFER_SIZE];
  int sec = millis() / 1000;
  int min = sec / 60;
  int hr = min / 60;
  int day = hr / 24;

  snprintf(temp, BUFFER_SIZE - 1,
           "<html>\
<head>\
<meta http-equiv='refresh' content='5'/>\
<title>AdvancedServer %s</title>\
<style>\
body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }\
</style>\
</head>\
<body>\
<h2>Hi from EthernetWebServer!</h2>\
<h3>on %s</h3>\
<p>Uptime: %d d %02d:%02d:%02d</p>\
<img src=\"/test.svg\" />\
</body>\
</html>", BOARD_NAME, BOARD_NAME, day, hr % 24, min % 60, sec % 60);

  server.send(200, "text/html", temp);
}

void handleNotFound()
{
  String message = "File Not Found\n\n";
  message += "URI: ";
  message += server.uri();
  message += "\nMethod: ";
  message += (server.method() == HTTP_GET) ? "GET" : "POST";
  message += "\nArguments: ";
  message += server.args();
  message += "\n";

  for (uint8_t i = 0; i < server.args(); i++)
  {
    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
  }

  server.send(404, "text/plain", message);
}

void drawGraph()
{
  String out;
  out.reserve(3000);
  char temp[70];
  out += "<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" width=\"310\" height=\"150\">\n";
  out += "<rect width=\"310\" height=\"150\" fill=\"rgb(250, 230, 210)\" stroke-width=\"1\" stroke=\"rgb(0, 0, 0)\" />\n";
  out += "<g stroke=\"black\">\n";
  int y = rand() % 130;

  for (int x = 10; x < 300; x += 10)
  {
    int y2 = rand() % 130;
    sprintf(temp, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" stroke-width=\"1\" />\n", x, 140 - y, x + 10, 140 - y2);
    out += temp;
    y = y2;
  }
  out += "</g>\n</svg>\n";

  server.send(200, "image/svg+xml", out);
}

void setup(void)
{
  Serial.begin(115200);
  while (!Serial);

  //delay(1000);

  Serial.println("\nStarting AdvancedServer on " + String(BOARD_NAME));

#if USE_ETHERNET_WRAPPER

  EthernetInit();

#else

#if USE_ETHERNET
  LOGWARN(F("=========== USE_ETHERNET ==========="));
#elif USE_ETHERNET2
  LOGWARN(F("=========== USE_ETHERNET2 ==========="));
#elif USE_ETHERNET3
  LOGWARN(F("=========== USE_ETHERNET3 ==========="));
#elif USE_ETHERNET_LARGE
  LOGWARN(F("=========== USE_ETHERNET_LARGE ==========="));
#elif USE_ETHERNET_ESP8266
  LOGWARN(F("=========== USE_ETHERNET_ESP8266 ==========="));
#else
  LOGWARN(F("========================="));
#endif

  LOGWARN(F("Default SPI pinout:"));
  LOGWARN1(F("MOSI:"), MOSI);
  LOGWARN1(F("MISO:"), MISO);
  LOGWARN1(F("SCK:"),  SCK);
  LOGWARN1(F("SS:"),   SS);
  LOGWARN(F("========================="));

#if defined(ESP8266)
  // For ESP8266, change for other boards if necessary
#ifndef USE_THIS_SS_PIN
#define USE_THIS_SS_PIN   D2    // For ESP8266
#endif

  LOGWARN1(F("ESP8266 setCsPin:"), USE_THIS_SS_PIN);

#if ( USE_ETHERNET || USE_ETHERNET_LARGE || USE_ETHERNET2 )
  // For ESP8266
  // Pin                D0(GPIO16)    D1(GPIO5)    D2(GPIO4)    D3(GPIO0)    D4(GPIO2)    D8
  // Ethernet           0                 X            X            X            X        0
  // Ethernet2          X                 X            X            X            X        0
  // Ethernet3          X                 X            X            X            X        0
  // EthernetLarge      X                 X            X            X            X        0
  // Ethernet_ESP8266   0                 0            0            0            0        0
  // D2 is safe to used for Ethernet, Ethernet2, Ethernet3, EthernetLarge libs
  // Must use library patch for Ethernet, EthernetLarge libraries
  Ethernet.init (USE_THIS_SS_PIN);

#elif USE_ETHERNET3
  // Use  MAX_SOCK_NUM = 4 for 4K, 2 for 8K, 1 for 16K RX/TX buffer
#ifndef ETHERNET3_MAX_SOCK_NUM
#define ETHERNET3_MAX_SOCK_NUM      4
#endif

  Ethernet.setCsPin (USE_THIS_SS_PIN);
  Ethernet.init (ETHERNET3_MAX_SOCK_NUM);

#endif  //( USE_ETHERNET || USE_ETHERNET2 || USE_ETHERNET3 || USE_ETHERNET_LARGE )

#elif defined(ESP32)

  // You can use Ethernet.init(pin) to configure the CS pin
  //Ethernet.init(10);  // Most Arduino shields
  //Ethernet.init(5);   // MKR ETH shield
  //Ethernet.init(0);   // Teensy 2.0
  //Ethernet.init(20);  // Teensy++ 2.0
  //Ethernet.init(15);  // ESP8266 with Adafruit Featherwing Ethernet
  //Ethernet.init(33);  // ESP32 with Adafruit Featherwing Ethernet

#ifndef USE_THIS_SS_PIN
#define USE_THIS_SS_PIN   22    // For ESP32
#endif

  LOGWARN1(F("ESP32 setCsPin:"), USE_THIS_SS_PIN);

  // For other boards, to change if necessary
#if ( USE_ETHERNET || USE_ETHERNET_LARGE || USE_ETHERNET2 )
  // Must use library patch for Ethernet, EthernetLarge libraries
  // ESP32 => GPIO2,4,5,13,15,21,22 OK with Ethernet, Ethernet2, EthernetLarge
  // ESP32 => GPIO2,4,5,15,21,22 OK with Ethernet3

  //Ethernet.setCsPin (USE_THIS_SS_PIN);
  Ethernet.init (USE_THIS_SS_PIN);

#elif USE_ETHERNET3
  // Use  MAX_SOCK_NUM = 4 for 4K, 2 for 8K, 1 for 16K RX/TX buffer
#ifndef ETHERNET3_MAX_SOCK_NUM
#define ETHERNET3_MAX_SOCK_NUM      4
#endif

  Ethernet.setCsPin (USE_THIS_SS_PIN);
  Ethernet.init (ETHERNET3_MAX_SOCK_NUM);

#endif  //( USE_ETHERNET || USE_ETHERNET2 || USE_ETHERNET3 || USE_ETHERNET_LARGE )

#else   //defined(ESP8266)
  // unknown board, do nothing, use default SS = 10
#ifndef USE_THIS_SS_PIN
#define USE_THIS_SS_PIN   10    // For other boards
#endif

  LOGWARN1(F("Unknown board setCsPin:"), USE_THIS_SS_PIN);

  // For other boards, to change if necessary
#if ( USE_ETHERNET || USE_ETHERNET_LARGE || USE_ETHERNET2 )
  // Must use library patch for Ethernet, Ethernet2, EthernetLarge libraries

  Ethernet.init (USE_THIS_SS_PIN);

#elif USE_ETHERNET3
  // Use  MAX_SOCK_NUM = 4 for 4K, 2 for 8K, 1 for 16K RX/TX buffer
#ifndef ETHERNET3_MAX_SOCK_NUM
#define ETHERNET3_MAX_SOCK_NUM      4
#endif

  Ethernet.setCsPin (USE_THIS_SS_PIN);
  Ethernet.init (ETHERNET3_MAX_SOCK_NUM);

#endif  //( USE_ETHERNET || USE_ETHERNET2 || USE_ETHERNET3 || USE_ETHERNET_LARGE )

#endif    //defined(ESP8266)


#endif  //USE_ETHERNET_WRAPPER


  // start the ethernet connection and the server:
  // Use Static IP
  //Ethernet.begin(mac, ip);
  // Use DHCP dynamic IP and random mac
  srand(1);
  uint16_t index = rand() % NUMBER_OF_MAC;
  //uint16_t index = random(NUMBER_OF_MAC);

  Ethernet.begin(mac[index]);

  // Just info to know how to connect correctly
  Serial.println("=========================");
  Serial.println("Currently Used SPI pinout:");
  Serial.print("MOSI:");
  Serial.println(MOSI);
  Serial.print("MISO:");
  Serial.println(MISO);
  Serial.print("SCK:");
  Serial.println(SCK);
  Serial.print("SS:");
  Serial.println(SS);
#if USE_ETHERNET3
  Serial.print("SPI_CS:");
  Serial.println(SPI_CS);
#endif
  Serial.println("=========================");

  Serial.print("Using mac index = ");
  Serial.println(index);

  Serial.print("Connected! IP address: ");
  Serial.println(Ethernet.localIP());

  server.on("/", handleRoot);
  server.on("/test.svg", drawGraph);
  server.on("/inline", []()
  {
    server.send(200, "text/plain", "This works as well");
  });

  server.onNotFound(handleNotFound);
  server.begin();

  Serial.print(F("HTTP EthernetWebServer is @ IP : "));
  Serial.println(Ethernet.localIP());
}

void heartBeatPrint(void)
{
  static int num = 1;

  Serial.print(F("."));

  if (num == 80)
  {
    Serial.println();
    num = 1;
  }
  else if (num++ % 10 == 0)
  {
    Serial.print(F(" "));
  }
}

void check_status()
{
  static unsigned long checkstatus_timeout = 0;

#define STATUS_CHECK_INTERVAL     10000L

  // Send status report every STATUS_REPORT_INTERVAL (60) seconds: we don't need to send updates frequently if there is no status change.
  if ((millis() > checkstatus_timeout) || (checkstatus_timeout == 0))
  {
    heartBeatPrint();
    checkstatus_timeout = millis() + STATUS_CHECK_INTERVAL;
  }
}

void loop(void)
{
  server.handleClient();
  check_status();
}

---

Debug Termimal Output Samples

1. The following are debug terminal output and screen shot when running example AdvancedWebServer on Adafruit NRF52840_FEATHER_EXPRESS

Starting AdvancedServer on NRF52840_FEATHER
[ETHERNET_WEBSERVER] =========== USE_ETHERNET_LARGE ===========
[ETHERNET_WEBSERVER] Default SPI pinout:
[ETHERNET_WEBSERVER] MOSI: 25
[ETHERNET_WEBSERVER] MISO: 24
[ETHERNET_WEBSERVER] SCK: 26
[ETHERNET_WEBSERVER] SS: 5
[ETHERNET_WEBSERVER] =========================
[ETHERNET_WEBSERVER] Unknown board setCsPin: 10
_pinCS = 0
W5100 init, using SS_PIN_DEFAULT = 10, new ss_pin = 10, W5100Class::ss_pin = 10
W5100::init: W5500, SSIZE =8192
=========================
Currently Used SPI pinout:
MOSI:25
MISO:24
SCK:26
SS:5
=========================
Using mac index = 13
Connected! IP address: 192.168.2.113
HTTP EthernetWebServer is @ IP : 192.168.2.113
.EthernetWebServer::handleClient: New Client
method:  GET
url:  /
search:
headerName: Host
headerValue: 192.168.2.113
headerName: Connection
headerValue: keep-alive
headerName: Cache-Control
headerValue: max-age=0
headerName: Upgrade-Insecure-Requests
headerValue: 1
headerName: DNT
headerValue: 1
headerName: User-Agent
headerValue: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Safari/537.36
headerName: Accept
headerValue: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
headerName: Referer
headerValue: http://192.168.2.113/
headerName: Accept-Encoding
headerValue: gzip, deflate
headerName: Accept-Language
headerValue: en-GB,en-US;q=0.9,en;q=0.8
args:
args count:  0
args:
args count:  0
Request: /
Arguments: 
Final list of key/value pairs:
EthernetWebServer::_handleRequest handle
EthernetWebServer::send1: len =  347
content =  <html><head><meta http-equiv='refresh' content='5'/><title>AdvancedServer NRF52840_FEATHER</title><style>body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }</style></head><body><h2>Hi from EthernetWebServer!</h2><h3>on NRF52840_FEATHER</h3><p>Uptime: 0 d 00:00:03</p><img src="/test.svg" /></body></html>
EthernetWebServer::_prepareHeader sendHeader Conn close
EthernetWebServer::send1: write header =  HTTP/1.1 200 OK
Content-Type: text/html
Content-Length: 347
Connection: close


EthernetWebServer::sendContent: Client.write content:  <html><head><meta http-equiv='refresh' content='5'/><title>AdvancedServer NRF52840_FEATHER</title><style>body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }</style></head><body><h2>Hi from EthernetWebServer!</h2><h3>on NRF52840_FEATHER</h3><p>Uptime: 0 d 00:00:03</p><img src="/test.svg" /></body></html>
EthernetWebServer::_handleRequest OK
EthernetWebServer::handleClient: Client disconnected
EthernetWebServer::handleClient: Don't keepCurrentClient
EthernetWebServer::handleClient: Client disconnected
EthernetWebServer::handleClient: New Client
method:  GET
url:  /test.svg
search:
headerName: Host
headerValue: 192.168.2.113
headerName: Connection
headerValue: keep-alive
headerName: User-Agent
headerValue: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Safari/537.36
headerName: DNT
headerValue: 1
headerName: Accept
headerValue: image/webp,image/apng,image/*,*/*;q=0.8
headerName: Referer
headerValue: http://192.168.2.113/
headerName: Accept-Encoding
headerValue: gzip, deflate
headerName: Accept-Language
headerValue: en-GB,en-US;q=0.9,en;q=0.8
args:
args count:  0
args:
args count:  0
Request: /test.svg
Arguments: 
Final list of key/value pairs:
EthernetWebServer::_handleRequest handle
EthernetWebServer::send1: len =  1950
content =  <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="310" height="150">
<rect width="310" height="150" fill="rgb(250, 230, 210)" stroke-width="1" stroke="rgb(0, 0, 0)" />
<g stroke="black">
<line x1="10" y1="98" x2="20" y2="111" stroke-width="1" />
<line x1="20" y1="111" x2="30" y2="90" stroke-width="1" />
<line x1="30" y1="90" x2="40" y2="22" stroke-width="1" />
<line x1="40" y1="22" x2="50" y2="98" stroke-width="1" />
<line x1="50" y1="98" x2="60" y2="64" stroke-width="1" />
<line x1="60" y1="64" x2="70" y2="104" stroke-width="1" />
<line x1="70" y1="104" x2="80" y2="31" stroke-width="1" />
<line x1="80" y1="31" x2="90" y2="59" stroke-width="1" />
<line x1="90" y1="59" x2="100" y2="139" stroke-width="1" />
<line x1="100" y1="139" x2="110" y2="117" stroke-width="1" />
<line x1="110" y1="117" x2="120" y2="75" stroke-width="1" />
<line x1="120" y1="75" x2="130" y2="72" stroke-width="1" />
<line x1="130" y1="72" x2="140" y2="137" stroke-width="1" />
<line x1="140" y1="137" x2="150" y2="20" stroke-width="1" />
<line x1="150" y1="20" x2="160" y2="94" stroke-width="1" />
<line x1="160" y1="94" x2="170" y2="81" stroke-width="1" />
<line x1="170" y1="81" x2="180" y2="38" stroke-width="1" />
<line x1="180" y1="38" x2="190" y2="33" stroke-width="1" />
<line x1="190" y1="33" x2="200" y2="53" stroke-width="1" />
<line x1="200" y1="53" x2="210" y2="88" stroke-width="1" />
<line x1="210" y1="88" x2="220" y2="32" stroke-width="1" />
<line x1="220" y1="32" x2="230" y2="110" stroke-width="1" />
<line x1="230" y1="110" x2="240" y2="87" stroke-width="1" />
<line x1="240" y1="87" x2="250" y2="11" stroke-width="1" />
<line x1="250" y1="11" x2="260" y2="98" stroke-width="1" />
<line x1="260" y1="98" x2="270" y2="76" stroke-width="1" />
<line x1="270" y1="76" x2="280" y2="121" stroke-width="1" />
<line x1="280" y1="121" x2="290" y2="139" stroke-width="1" />
<line x1="290" y1="139" x2="300" y2="103" stroke-width="1" />
</g>
</svg>

EthernetWebServer::_prepareHeader sendHeader Conn close
EthernetWebServer::send1: write header =  HTTP/1.1 200 OK
Content-Type: image/svg+xml
Content-Length: 1950
Connection: close

2. The terminal output of ESP32 running a ENC28J60_WM_Config example of BlynkEthernet_WM Library

Start ENC28J60_WM_Config on ESP32
[38] EEPROMsz:1024
[38] CCSum=0x29f2,RCSum=0x29f2
[38] CrCCsum=0,CrRCsum=0
[38] Hdr=ENC28J60,BName=ESP32-ENC28J60-WM
[38] Svr=account.duckdns.org,Tok=token
[45] Svr1=account.ddns.net,Tok1=token1
[51] Prt=8080,SIP=blank
[53] MAC:FE-80-D6-B4-FC-EE
ENC28J60_CONTROL_CS =13
SS =5
SPI_MOSI =23
SPI_MISO =19
SPI_SCK =18
[5332] IP:192.168.2.103
[5332] bg:ECon.TryB
[5332] 
    ___  __          __
   / _ )/ /_ _____  / /__
  / _  / / // / _ \/  '_/
 /____/_/\_, /_//_/_/\_\
        /___/ v0.6.1 on ESP32

[5343] BlynkArduinoClient.connect: Connecting to account.duckdns.org:8080
[6454] Ready (ping: 37ms).
[6522] Connected to Blynk Server = account.duckdns.org, Token = token
[6522] bg:EBCon
Conn2Blynk: server = account.duckdns.org, port = 8080
Token = token, IP = 192.168.2.103
BBBBBBBBBB BBBBBBBBBB BBBBBBBBBB

---

New in v1.0.10

1. Fix bug not closing client and releasing socket.
2. Merge new features from latest ESP8266WebServer
3. Add and enhance examples.

New in v1.0.9

1. Add EthernetWrapper.h for easier W5x00 support as well as more Ethernet libs in the future.
2. Add default SS/CS pin for ESP8266 and ESP32
3. Increase default clock speed for W5x00 in Ethernet and EthernetLarge libraries to 25MHz from 14MHz. Tested OK on W5100 as well as W5500.

New in v1.0.8

1. Fix W5x00 support for ESP8266 boards.

New in v1.0.7

1. Add ENC28J60 support to ESP32 and ESP8266 boards.

New in v1.0.6

1. Add W5x00 support to ESP32 and ESP8266 boards.

New in v1.0.5

1. Add support to nRF52 boards, such as AdaFruit Feather nRF52832, nRF52840 Express, BlueFruit Sense, Itsy-Bitsy nRF52840 Express, Metro nRF52840 Express, NINA_B30_ublox, etc.
2. Support any future custom Ethernet library that meets the no-compiling-error requirements. Currently Ethernet2, EThernet3, EthernetLarge libraries are supported. Ethernet_Shield_W5200, EtherCard, EtherSia libraries are not supported.

New in v1.0.4

1. Add support to SAM51 (Itsy-Bitsy M4, Metro M4, Grand Central M4, Feather M4 Express, etc.).

Version v1.0.3

1. From v1.0.3+, the library supports many more Arduino boards ( SAM DUE, SAMD: ZERO, MKR, NANO_33_IOT, M0, M0 Pro, AdaFruit CIRCUITPLAYGROUND_EXPRESS, etc.)

Version v1.0.2

1. From v1.0.2+, the library supports many more Arduino boards (Atmel AVR-s, Atmel SAM3X8E ARM Cortex-M3, STM32F series, ESP8266, Intel ARC32(Genuino101), Nordic nRF51(RFduino), Teensy boards, Realtek Ameba(RTL8195A,RTL8710))
2. Support Wiznet W5x00 or ENC28J60 EThernet shields by using UIPEthernet library besides standard Ethernet, Ethernet2, Ethernet3 libraries.

Version v1.0.1

1. Add support to Server's lambda function calls

Version v1.0.0

This is simple yet complete WebServer library for AVR, Teensy, etc. boards running Ethernet shields. The functions are similar and compatible to ESP8266/ESP32 WebServer libraries to make life much easier to port sketches from ESP8266/ESP32.

The library supports

1. HTTP Server and Client
2. HTTP GET and POST requests, provides argument parsing, handles one client at a time.

---

TO DO

1. Bug Searching and Killing
2. Add SSL/TLS Client and Server support
3. Support more types of boards using Ethernet shields.
4. Support more non-compatible Ethernet Libraries such as Ethernet_Shield_W5200, EtherCard, EtherSia
5. Add UDP and mDNS features.

DONE

1. Add support to Arduino SAMD21 (ZERO, MKR, NANO_33_IOT, etc.)
2. Add support to Adafruit SAMD21 (Itsy-Bitsy M0, Metro M0, Feather M0 Express, etc.).
3. Add support to Adafruit SAMD51 (Itsy-Bitsy M4, Metro M4, Grand Central M4, Feather M4 Express, etc.).
4. Add support to Adafruit nRF52 ( Feather nRF52832, nRF52840 Express, BlueFruit Sense, Itsy-Bitsy nRF52840 Express, Metro nRF52840 Express, NINA_B302_ublox, NINA_B112_ublox, etc..
5. Add support to SAM DUE.
6. Add support to Ethernet W5x00, using either Ethernet, Ethernet2, Ethernet3 or EthernetLarge library
7. Add support to Ethernet ENC28J60, using UIPEthernet library

---

Contributions and Thanks

Many thanks for everyone for bug reporting, new feature suggesting, testing and contributing to the development of this library.

1. Based on and mdified from from Ivan Grokhotkov's ESP8266WebServer
2. jandrassy for UIPEthernet library
3. Thanks to good work of Miguel Alexandre Wisintainer for initiating, inspriring, working with, developing, debugging and testing. Without that, support to nRF52, especially U-Blox B302 running as nRF52840 and U-Blox B112 running as nRF52832, has never been started and finished. Also see ESP32-based U-BLOX NINA W102 running ENC28J60.
4. Thanks to Vladimir to initiate the work on ESP32 and ESP8266 in Spiffs not work Issue #2

⭐️ igrr

⭐️ jandrassy

⭐️ tcpipchip

Vladimir

Contributing

If you want to contribute to this project:

• Report bugs and errors
• Ask for enhancements
• Create issues and pull requests
• Tell other people about this library

Copyright

Copyright 2020- Khoi Hoang